Running prospector on requirements.txt results in TypeError: unorderable types: str() > NoneType() about prospector HOT 8 CLOSED

Traceback (most recent call last):
  File "/home/erlingbo/.virtualenvs/project_name/bin/prospector", line 9, in <module>
    load_entry_point('prospector==0.9.9', 'console_scripts', 'prospector')()
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/prospector/run.py", line 127, in main
    config = ProspectorConfig()
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/prospector/config/__init__.py", line 33, in __init__
    self.libraries = self._find_used_libraries(self.config, self.profile)
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/prospector/config/__init__.py", line 153, in _find_used_libraries
    map(libraries.append, autodetect_libraries(self.workdir))
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/prospector/autodetect.py", line 136, in autodetect_libraries
    libraries = find_from_requirements(path)
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/prospector/autodetect.py", line 117, in find_from_requirements
    reqs = find_requirements(path)
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/requirements_detector/detect.py", line 114, in find_requirements
    requirements.sort()
  File "/home/erlingbo/.virtualenvs/project_name/lib/python3.4/site-packages/requirements_detector/requirement.py", line 101, in __gt__
    return self.name > other.name
TypeError: unorderable types: str() > NoneType()

#requirements/base.txt
django==1.7.5
djangorestframework==3.0.5
django-filter==0.9.2
Markdown==2.5.2
django-cors-headers==1.0.0
python-social-auth==0.2.1
djangorestframework-jwt==1.2.0
djangorestframework-camel-case==0.2.0
------------
#requirements/dev.txt
-r base.txt
------------
#requirements/prod.txt
-r base.txt
http://www.lfd.uci.edu/~gohlke/pythonlibs/z94jfosk/pyodbc-3.0.7-cp34-none-win32.whl
django-pyodbc-azure
------------